BGS mineralogy and petrology collection record
| Sample number | E66357; COLLNOWPR101; |
|---|---|
| Sample Donor | Pratt, W. |
| Rock name | Not entered |
| Stratigraphy | Not entered |
| Comments | Rhyolite |
| Locality details | Summit of Craig y Llan |
| 50k map sheet | Barmouth (149) |
| Map reference | SH 7549 1340 |
| Year collected | Not entered |
| Bore name | Not applicable |
| Confidentiality | No restrictions |
Petrological thin sections
Links to high resolution images
Transition from XPL to PPL light
E66357
